@base_vw: 1920vw;

@base_vh: 1080vh;

.vw(@vw) {
  @return: @vw / @base_vw * 100;
}

.vh(@vh) {
  @return: @vh / @base_vh * 100;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-start {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.flex-start-start {
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
}

.flex-start-end {
  display: flex;
  justify-content: flex-start;
  align-items: flex-end;
}

.flex-start-vertical {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-direction: column;
}

.flex-center-vertical {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.flex-between-vertical {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: column;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-end {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.flex-center-end {
  display: flex;
  justify-content: center;
  align-items: flex-end;
}
